[INFO] fetching crate vga_buffer_rs 0.1.2...
[INFO] testing vga_buffer_rs-0.1.2 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate vga_buffer_rs 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate vga_buffer_rs 0.1.2
[INFO] finished tweaking crates.io crate vga_buffer_rs 0.1.2
[INFO] tweaked toml for crates.io crate vga_buffer_rs 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vga_buffer_rs 0.1.2 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding volatile v0.2.7 (available: v0.6.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41ccf5334b43cec2679d9f987524a87a236cf7126e71bccf58c22985410efb46
[INFO] running `Command { std: "docker" "start" "-a" "41ccf5334b43cec2679d9f987524a87a236cf7126e71bccf58c22985410efb46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41ccf5334b43cec2679d9f987524a87a236cf7126e71bccf58c22985410efb46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41ccf5334b43cec2679d9f987524a87a236cf7126e71bccf58c22985410efb46", kill_on_drop: false }`
[INFO] [stdout] 41ccf5334b43cec2679d9f987524a87a236cf7126e71bccf58c22985410efb46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75188e01634db2216057a4a7b3a753806493b68b157e977d1e273ab8feb4d7a5
[INFO] running `Command { std: "docker" "start" "-a" "75188e01634db2216057a4a7b3a753806493b68b157e977d1e273ab8feb4d7a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling vga_buffer_rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/cursor.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         llvm_asm!("outb %al,%dx"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/cursor.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         llvm_asm!("outb %al,%dx"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/cursor.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         llvm_asm!("outb %al,%dx"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/cursor.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         llvm_asm!("outb %al,%dx"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/cursor.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         llvm_asm!("outb %al, %dx"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/cursor.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         llvm_asm!("outb %al, %dx"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `llvm_asm`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(llvm_asm)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vga_buffer_rs` (lib) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "75188e01634db2216057a4a7b3a753806493b68b157e977d1e273ab8feb4d7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75188e01634db2216057a4a7b3a753806493b68b157e977d1e273ab8feb4d7a5", kill_on_drop: false }`
[INFO] [stdout] 75188e01634db2216057a4a7b3a753806493b68b157e977d1e273ab8feb4d7a5